Fastening-inserting machine



June 26, 1934.

F. L. M KENZIE FASTENING INSERTING MACHINE Fil'ed Dec. 31, 1931 2 Sheets-Sheet 1 June 26, 1934. F. L. M cKENZIE FASTENING INSERTING MACHINE Filed Dec. 31, 1931 2 Sheets-Sheet 2 vg/v TUE. M R .M W

I ing, a problem of some difiiculty presents itself in bringing the points of insertion of the nails sufli- Patented June 26, 1934 UNITED STATES PATENT OFFICE FASTENING-INSERTING MACHINE Application December 31, 1931, Serial No. 584,181

22 Claims.

The present invention relates to the insertion of fastenings, it being especially concerned with the driving of nails from within shoes for the attachment of the heels thereto.

In the securing of heels to shoes by inside nailciently close to the edge of the shoe-heel to produce a close crease, without causing the nails to emerge through the side-walls of the heels. This is particularly true of womens work, in which the heels are heavily inclined from the heel-seatend inwardly to the tread-end. The nails may be driven most advantageously in an inclined di- 15- rection, thus to some extent following the heelwall and permitting the insertion of the nails close to the edge of the heel. An object of my invention is to obtain such a relation of the heelsecuring nails by means which will drive said nails at a greater'angle than has heretofore been practical, and which is simple, durable and convenient for the operator to use.

-A feature leading to the attainment of this object consists of a jack or work-support provided with passages in which one or more nail or fastening-drivers are movable both longitudinally and angularly laterally of the passages, with a plunger or actuating member to which the driver or drivers are pivoted about axes fixed against movement. Preferably, a fulcrum-surface is furnished in each passage, upon which the corresponding driver may turn. Each passage is shown as tapering from a minimum diame ter at its opening, the driver fitting in said opening and being considerably spaced from the remainder of the passage. By this arrangement, the drivers may turn angularly, either about their nail-engaging ends as these contact with the passage-walls or at the passage-openings and thus cause the direction in which the fastenings are inserted to be inclined in a chosen direction, which, in connection with the attachment ofheels by nails driven from within shoes, would be inwardly from the heel-seat-end. The passages through which the fastenings are driven are also preferably inclined throughout their lengths, the effect of this being added to that of the angular movement of the drivers just referred to. Because of the enlargement of the passages, the drivers may be of the most simple,

rigid form, their lateral movement being permitted wholly by the clearance in the portions of the passages removed from the openings. The difficulties involved in maintaining flexible drivers in operating condition is thus avoided.

Since it is advantageous to bush the fasteningpassages, and since it is desirable that the ends of the inserted tubes shall furnish work-contacting surfaces which lie at angles other than 90 degrees to the axes of the inclined tubes, as in a horizontal plane, it is necessary that the tubes shall be held in the jack or work-support in predetermined angular positions about their axes. This positioning eifect I obtain, as another feature of my invention, by a unitary retaining device arranged to positively look all the tubes in definite angular positions about their axes. This, as illustrated, both determines the angles of the tubes by holding them against turning in the support, and also retains them against longitudinal displacement. There is illustrated herein a retaining plate overlying the head of each of the tubes and engaging a positioning surface thereon. An adjustable gage, such as a back-stop for a jacked shoe, may have means in common with the retaining device or plate for clamping it in place.

Because" the drivers may become separated from the work-support, as in arranging the machine for operating upon different sizes of shoes, and because such drivers are pivoted upon their 80, mounting-it might be troublesome to hold them in the proper inclined relation to enter the passages in the support. Still another feature of the invention insures the temporary maintenance of the drivers against movement about the piv-' 85, otal connections to the reciprocatory plunger or the like, by which they are actuated For'thi's purpose, yieldable means resists movement of the drivers about their pivots and holds them, when separated from the jack, wherever they may be placed. This allows all the drivers to be alined for ready entrance into the corresponding jackpassages. In the present instance, the retaining means consists of a spring-plate secured to the actuating member and which engages endportions of the drivers.

In the accompanying drawings,

Fig. 1 shows, partly in elevation and partly in section, the jack of a heel-attaching machine embodying my invention in a particular form;

Fig. 2 is a top plan view of said jack;

Fig. 3, a vertical section on the line III-III of Fig: 2; and

Fig. 4, a full horizontal section on the line IVIV of Fig. 3.

At 10 appears a jack-body of the general form employed for nailing heels from the inside of shoes, and having at its top a chamber 12, to which access may be had through a door 14 in the side-wall. Mounted to reciprocate vertically 110 in the jack is a plunger 16 terminating in a T-head 18 adapted to engage a driver-block 20. Formed in the upper face of the block and opening through said face are partly cylindrical channels 22, one for each driver to be used. Each of these channels receives a cylindrical end-piece 24 threaded upon the lower extremity of a rigid driver-rod 26 and retained against rotation by a check-nut 28. A pivotal mounting is thus furnished for each driver, the direction in which said driver may oscillate being determined by the angle at which the corresponding end 24 lies in a horizontal plane. Each driver may be frictionally engaged by a pressure device. This device is shown in the form of a spring-plate 32 secured to the block 20 by a screw 34 passing through a spacing washer 36, said plate having a fork 38 straddling each driver and bearing upon the upper side of the corresponding nut 28. The effect of this pressure device is to slightly resist oscillation of all the drivers, so tending to retain them against movement upon their pivots. Its purpose will later appear.

Removably secured to the jack-body 10 by a screw 40 is an intermediate portion furnished by a casting 42 having its side-wall inclined and contracted laterally at its upper end 44 to avoid interference with the jacked work. In this casting are passages 46, one for each driver and inclined upwardly and inwardly. The passages are of considerably greater diameter than the drivers, giving ample clearance for lateral movement of said drivers as they oscillate upon the driverblock. Tapered throats 48 at the lower ends of the passages facilitate the entrance of the drivers when the elements are assembled.

The top of the jack is provided by a nail-block 49 located in the correct angular relation to the top 44 of the casting 42 by a horizontal tongue and groove 50 and by a vertical pin 52. In a space 53 between the top and casting there is arranged to slide the shank 54 of a work-gage or back-stop 56, said back-stop serving, by contact with the inside of the rear counter-portion of a jacked shoe, to properly position it for the nailing operation. 'A locking plate 58 in the space 53 is drawn against the back-stop-shank by a screw 60 threaded into said locking plate and having its head located above the jack-top. By loosening the screw 60, the back-stop may be adjusted, as desired, from front to the rear of the jack and again locked by tightening the screw to draw the plate 58 against it.

Formed in the top 49 are passages 62 respectively alined with the passages 46 and having substantially the same inward and upward inclination. Inserted in each passage 62 is a nailtube or bushing 64 provided with an enlargement or head 66 seated in a counter-bore surrounding the upper end of the passage. In these tubes the ends of the drivers rise and fall during the reciprocation of the plunger 16, carrying upon their upper ends nails N to be driven. Each driverend 67 is shown as inclined inwardly and downwardly with respect to the vertical, the angle to the driver-axis preferably being somewhat more than 90 degrees. The driver-end may consequently exert an effective driving force with an angle of insertion of the nails in the work greater than would result from the inclination of the driver-tubes alone. The passage 68 through each tube is preferably tapered from a diameter at its lower extremity sufficient to allow the maximum lateral movement of the corresponding driver, to one at the upper tube-opening 69 only sufficient to permit the passage of the driver therethrough. These upper ends of the tubes about the openings present surfaces '70 lying in a substantially horizontal plane, to adapt them to receive the contact of the inside of a shoeupper over the heelseat. As this surface upon the tube-heads is tobe horizontal, while the body of the tube is inclined to the horizontal, a definite angular position of each tube about its axis must be established and maintained. To accomplish this, each tube has at the inner side of its head an approximately vertical surface 72 lying in a predetermined angular relation about the axis and rising from a horizontal surface 74 upon the head. Contacting with both the surfaces '72 and 74 of each tube is an edge '76 of a polygonal retaining plate 78, there being a plate-edge for each tube. The plate 78 may be drawn down against the tube-surfaces '74 by the same screw 60 which provides the clamping action of the plate 58, and when so seated correctly locatesthe tubes and holds them against'both angular and upward displacement.

There is illustrated in Fig; 1 of the drawings a portion of a shoe-upper S in place upon the jack, to which shoe the attachment of a heel H has just been completed. Initially, the elements occupy the positions appearing in Fig. 3, the plunger 16 being lowered and the drivers 26 retracted. At this time, the attaching nails N are,

supplied to the tube-passages 68 through the openings 69 and rest with their heads upon the ends 67 of the drivers. The shoe having been jacked and the heel applied to the heel-seat, a

pressure-abutment 80 is brought down upon the heel, and the machine started in operation. With the heel and shoe clamped together upon the surfaces of the tubes 64, the'plunge'r 16 rises,

forcing up the drivers and the supported nails, the end of each driver moving incontact with the outer side of the wall of its passage. After the points of the nails have entered the insole of the shoe at angles determined approximately by the inclination of the drivers, the upper ends.

of the tubes at the 'innerportions of the openings 69 serve as fulcra, and, as, the actuating.

means 16, 18 with the driver-pivot-portions 24:

ascend vertically, each entire rigid driver-rod will be caused to shift through a graduallyincreas-;

ing inward and upward angle about its fulcrum;

producing a greater downward inclination of the end-surface 6'7 and augmenting the tendency of the points of the nails to- .bend in away from the side-wall of the heel. This effect is especially great while the points of the nails are moving through the relatively soft substance of the heel-seat. The angular movement of the drivers is permitted by the clearance within the passages 46 and the taper of the passages 68. As the driver-surfaces 67 emerge from the openings of the tubes 64 to sink the :nail-heads in the insole of the shoe, lateral movement of the driver-ends is prevented by their fit within the openings 69. Therefore, the final actuatingtravel, with a maximum difference of direction between the movement of the driver-ends, may add to the inward inclination or curvature of the nails. These successive nail: deflecting actions are gained without sacrifice ofstrength of the driver-assembly, the pivoting of the drivers about axes fixed against movement giving a sturdy connection which allows the thrust of theactuating plungerto be effectively transmitted to the rigid drivers.

When the jack is to beprepared for the nailing of shoes too large ortoo small for the arrangement of top and drivers which has been in use, the change to the correct elements'may conveniently be effected by separation from the jack-body 10 and plunger 16, of the casting'42, top 49 and the entire driver-assembly. For this purpose, block 20 is slid from the plunger through door 14, and the upper elements of the jack are simultaneously removed. It is possible, however, that the drivers may become displaced from their passages. In that case, the introduction of the drivers into the passages is made easy by the engagement of the pressure-plate 32. This holds the drivers at whatever angle they may be turned by the operator, so they may readily be alined with the lower ends of passages 46. The tapered entrance-throats 48 of these passages further aids in the introduction of the drivers.

Having described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. In a fastening-inserting machine, a support provided with a passage having an opening through the work-engaging surface of said support and inclined throughout its length inwardly to the opening, a reciprocatory actuating member, and a fastening-driver movable in the passage and pivotally connected to the actuating member about an axis fixed against movement, the driver being free for angular movement laterally of the passage.

2. In a fastening-inserting machine, a worksupport provided with passages each having its walls fixed against movement and being provided with a surface furnishing a fulcrum, a fasteningdriver movable longitudinally and laterally of each passage and turning angularly upon the fulcrum-surface, and an actuating member connected to all the drivers.

3. In a fastening-inserting machine, a worksupport provided with passages each having a contracted nail-receiving opening, a fasteningdriver movable longitudinally and laterally of each passage and turning angularly upon the wall of the passage, and an actuating member to which all the drivers are pivoted about axes fixed against movement.

4. In a fastening-inserting machine, a worksupport provided with passages each having an opening through the work-engaging surface of the support and inclined inwardly to such openings, a reciprocatory actuating member, and a fastening-driver movable in each passage and pivotally connected to the actuating member, said 'drivers substantially fitting the opening of the passage and being spaced from the wall of the remainder of said passage.

5. In a fastening-inserting machine, a worksupport provided with passages each having an opening through the work-engaging surface of the support and inclined inwardly to such openings, each passage being tapered to a minimum diameter at the opening, a reciprocatory actuating member, and a fastening-driver movable in each passage and pivotally connected to the actuating member.

6. In a fastening-inserting machine, a worksupport provided with passages each having an opening through the Work-engaging surface of the support and inclined inwardly to such openings, a reciprocatory actuating member, and a fastening-driver movable in each passage and pivotally connected to the actuating member, the

fastening-engaging surface of the end of the driver being inclined with respect to 'the 1on'gi-. tudinal axis of said driver.

7. In a jack for nailing machines, a top provided with passages inwardly inclined throughout their lengths,-a plunger arranged to reciprocate beneath the top and provided with sockets, and rigid nail-drivers having end-portions pivoted in the sockets and movable in the passages.

8. In a jack for nailing machines, a top provided with inwardly inclined passages each having a nail-receiving opening andbeing of minimum diameter at said opening, a plunger arranged to reciprocate beneath the top and provided with sockets, and rigid nail-drivers having end-portions pivoted in the sockets and movable in the passages.

9. In a fastening-inserting machine, a worksupport, aplurality of inclined fastening-receiving tubes mounted therein, and'a unitary device having constant engagement with all the tubes and arranged to engage and positively lock each tube in a definite angular position'about its longitudinal axis. 1

10. In a fastening-inserting machine, a work-. support, a plurality of inclined fastening-receiving tubes mounted therein, and a unitary device having constant engagement with all the tubes and arranged to engage and positively lock each tube in a definite angular position about its longitudinal axis and to retain each tube against longitudinal displacement.

11. In a heel-attaching machine, a jack provided with passages inclined with respect to its longitudinal axis, nail-tubes situated in the passages and having ends presenting surfaces lying in a plane common to all for contact with the work, and a member engaging all the tubes and arranged to retain each of said tubes in a definite angular position about its longitudinal axis.

12. In a heel-attaching machine, a jack provided with passages inclined with respect-to its longitudinal axis, nail-tubes situated in the pas-. sages and having ends presenting surfaces lying in a plane common to all for contact with the work, each tube being provided with a positioning surface having a predetermined angular relation about its axis, and a retaining member engaging the positioning surfaces.

13. In a heel-attaching machine, a jack provided with passages inclined with respect to its longitudinal axis, nail-tubes situated in the passages and each having a head resting upon the top of the jack, each head being provided at one side with a flattened portion, and a plate secured to the jack-top and engaging the flattened portion of each tube-head.

14. In a heel-attaching machine, a jack provided with passages inclined with respect to its longitudinal axis, nail-tubes situated in the passages and each having a head resting upon the top of the jack, each head being provided at one side with a flattened portion, and a plate secured to the jack-top and engaging the flattened portion of each tube-head to retain it against rotation and overhanging the head to prevent its 1ongitudinal displacement.

15. In a fastening-inserting machine, a worksupport, a plurality of inclined fastening-receiving tubes, an adjustable gage member, and means for simultaneously clamping the tubes and gage member against movement upon the support.

16. In a fastening-inserting machine, a worksupport, a plurality of inclined fastening-receiving tubes mounted therein, a unitary device engaging all the tubes and arranged to hold each tube in a definite angular position about its longitudinal axis, an adjustable gage member carried-by the support, and clamping means common tothe retaining device and gage member.

17. In a heel-attaching machine, a jack provided with passages inclined with respect to the longitudinal axis, nail-tubes situated in the pas sages and each having a head resting upon the top of the jack, each head being provided at one side with a flattened portion, a plate secured to the jack-top and engaging the flattened portion of' each tube-head, a back-stop for a jacked shoe, and a screw extending through the plate and clamping the back-stop.

18. In a fastening-inserting machine, a worksupport provided with passages, an actuating member movable in the support, fastening-drivers pivoted upon the actuating member and movable in the passages, and yieldablemeans arranged to hold the drivers at whatever angles they may be turnedabout their pivots."

19. In a fastening-inserting machine, a worksupport provided with inclined passages, an actuating member movable in the support, fasteningdrivers pivoted upon the actuating member and movable in the passages, and a pressure device secured to the actuating member and engaging the drivers to retain them in positions corresponding to the inclinations of the passages.

20. In a hell-attaching machine, a jack provided with a separable top in which are passages, a plunger reciprocating in the jack, drive ers pivoted upon the plunger, and means carried by the plunger and contacting with the drivers to retain them in definite angular positions.

21. In a heel-attaching machine, a jack pro vided with a separable top in which are passages, a plunger reciprocating in the jack, drivers having pivotal end-portions engaging the plunger, and a spring member secured to the plunger andcontacting with the end-portions of the drivers.

22. In a jack for nailing machines, a top provided with inwardly inclined passages, a plunger arranged to reciprocate beneath the top and provided with sockets, rigid nail-drivers movable in the passages and'having end-portions pivoted in the sockets, and a spring-plate secured to the plunger and engaging the end-portions of the drivers toretain them at inclinations corresponding to the passages.

' r FRED L. MACKENZIE.

CERTIFICATE OF CORRECTION.

Patent No. 1,964, 004. June 26, 1934.

FRED L. Ma cKENZIE.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as foiiews: Page 4, line 99, claim 22, for "retain" read maintain; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 11th day of September, A. D. 1934.

Leslie Frazer (Seal) Acting Commissioner of Patents. 

